chore(backlog): 记录 g133 完成

.ua/backlog.json

@@ -1426,7 +1426,7 @@
       "title": "树形选择补 treeSelect 组件",
       "motivation": "tree 与 select 都在，但「可搜索的层级下拉选择」缺位，级联选择 cascader 不适配任意深度懒加载场景",
       "acceptance": "treeSelect 点击开弹层、支持搜索过滤、单选/多选、父子联动、清空，弹层沿用 overlay 的 Esc 栈与外部点击收起；样式只消费 --ua-*；文档与演示同步；npm run check 全绿",
-      "status": "open",
+      "status": "done",
       "notes": "自补：组件补充方向"
     }
   ]

.ua/iterations.log

@@ -177,3 +177,4 @@
 {"ts":"2026-10-26T15:20:05+08:00","id":"g130","result":"done","commit":"23d1e06","summary":"新增 grid 栅格容器（columns 固定列 / min auto-fit 自适应 / gutter / align / dense，窄屏单列），组件 61→62"}
 {"ts":"2026-10-26T15:21:23+08:00","id":"g131","result":"done","commit":"d9559ae","summary":"新增 floatButton（左下/右下停靠、label 胶囊与纯图标圆形、badge 角标、tooltip 兼 aria-label、reduced-motion 兜底），组件 62→63"}
 {"ts":"2026-10-26T15:22:59+08:00","id":"g132","result":"done","commit":"9d0c195","summary":"新增 mentions（@ 触发弹层、名字/关键词过滤、↑↓ 环形移动、Enter/Tab 选中、Esc 只收本层、按光标替换写回信号），组件 63→64"}
+{"ts":"2026-10-26T15:24:26+08:00","id":"g133","result":"done","commit":"0f6331c","summary":"新增 treeSelect（复用 tree 的搜索/多选/级联，单选即收起、多选保持展开，共享 Esc 栈 + 点外收起），组件 64→65"}